42395418 has 48 divisors (see below), whose sum is σ = 99939840. Its totient is φ = 12910752.

The previous prime is 42395411. The next prime is 42395443. The reversal of 42395418 is 81459324.

42395418 is a `hidden beast` number, since 4 + 239 + 5 + 418 = 666.

42395418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42395411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23223 + ... + 24981.

It is an arithmetic number, because the mean of its divisors is an integer number (2082080).

Almost surely, 2^42395418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42395418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49969920).

42395418 is an abundant number, since it is smaller than the sum of its proper divisors (57544422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42395418 is a wasteful number, since it uses less digits than its factorization.

42395418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883 (or 1880 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 42395418 is about 6511.1763914058. The cubic root of 42395418 is about 348.6901188282.

The spelling of 42395418 in words is "forty-two million, three hundred ninety-five thousand, four hundred eighteen".